I didn't realise that what I said sounded impressive to the point of prompting a trekkie (or whatever it is you're referring to) to deblaterate nonsensical gobbledegook to try to sound as "cool".
Ha... however considered that.flv video is H263 (or is it H264 now?) I guess you could find a program that would change the container to an AVI-compatible one and thus avoid recompressing?
During that silent period, YouTube's encoder would be cranking up the gain so much that, when the first guitar pluck occured, it would still be a highly clipped thud.
Well actually it really depends. It depends whether it's audio compression, or volume normalisation. If it's audio compression then things get amplified regardless of chronology, and therefore if you remove the ambient noise it won't get amplified to an audible hiss and it won't have a negative effect on anything else.
However what you were thinking about is "volume normalisation". In that case a quick change if volume would have the effect you described. I'm not sure which it is in this case but from the summary it looks like it's audio compression.
By the way, noise gating? There are more sophisticated things these days for that, like stuff based on STFTs and noise profiling.
Did you try VLC's "volume normalizer"? It's not compression but it makes more quiet passages louder. And if your ambient noise problem is that bad, it may damage your hearing in the long term depending on how loud it really is.
Any chance this would be due to a non-linearity like clipping? Someone correct me if I'm wrong but I think that with clipping with a strong 19 kHz component in a signal sampled at 44.1 kHz you'd get artifacts which base frequency would be 3,050 Hz.
Wouldn't another solution be to sneak past the entire recompression process by submitting a.flv video that meets YouTube's requirements to avoid recompression? Or would the compression on audio (not the same type of compression, the one this article is talking about) still be forced on these?
By the way to improve the trick, what you could do is detect the envelope of your sound, a modulate your 19 kHz sine with an envelope complementary so that the two envelopes would sum up to a flat line, so your 19 kHz envelope would be f(t) = 1 - original_sound_envelope(t).
[SETI] is trying to find significantly more advanced civilizations
Great, so what you're saying is SETI is just a bunch of elitist? That's grand, I just can't wait until they make the Earth move to a gated planet community.
Don't get me wrong, that would be great, with all these asteroids impacts we've had these last few eons in our neighbourhood..
Pffft, but obvious, the aliens will have thought of the same thing as us, that we should reserve the 1.420 GHz frequency for interplanetary communications and that we would be listening and that they would be the ones listening.
Now excuse me while I go back to listening to some radio frequency I think would be good for two persons to communicate on and wait for someone I never communicated with before to talk to me on this agreed frequency.
No it's a good analogy, although worded it a manner that may make its interpretation prone to confusion. "and trying to hear when anyone plays the note "A sharp."" should really be "and trying to hear nothing but "A sharp" notes".
It has nothing to do with identifying the pitch of a note as you seem to have misunderstood, it has to do with not being able to hear anything but one note in an entire piece.
Strange that they are only doing that now - haven't they seen Contact?
What the hell are you talking about? In Contact the SETI is basically just a bunch of hippies who time-share radiotelescopes and look for signals by listening into headphones. Here we're talking about listening to bands hundreds of megahertz wide. Very different.
If so we're out of luck. I mean how often do we even deliberately try to send beacons to eventual alien civilizations? We couldn't find ourselves in a giant space mirror the way we're doing it.
By the way you cannot really understand what a temperature this close to 0 kelvins represents if you don't know what 0 K is, and when you do not only you know how much 0 K is but it also makes the conversion irrelevant because 10 mK = 0.01 K = 0.01 Celsius above 0 K = 0.018 F above 0 K
Why didn't they give the users multiple flavors of the most colorful operating systems they never tried (Vista, OSX, Kubuntu, etc) and ask them which one they liked best?
Why? Oh I don't know really.. Maybe because Microsoft doesn't want to publish something that says that users like Mac OS X best?
That "No Snitchin" movement is particularly stupid, because it's led by rappers and such who have no idea why one shouldn't snitch. Obviously it started as a way to "protect" local organised crime you're involved with and to rely on "street justice" rather than the traditional justice system, yet this silly movement made it into a golden rule that applies to absolutely everything without wondering why.
Because of such a silly rule, in cases when the witnesses have nothing to fear and that "street justice" will most likely not be given, people avoid witnessing for the sake of their own reputation. Just because they don't want to be "tagged snitch", the movement only amplifying what can make you be tagged a snitch to reach ridiculous proportions. And rappers only join the movement because it adds to their "street credentials", which most need more of, as in rap "street credibility" is something everybody claims to have more than they really do.
Which really all comes down to machoism/pissing contests from people who live in huge mansions in Connecticut and such. However it's not because something is dramatic that we cannot joke about it. I mean, we joke about all kinds of things that are actually atrocious.
You know what I like the most when people who try to save the world? When they ruin it.
My point being, the FSF is doing itself a big disservice while thinking they're fighting for their cause. All activists end up occasionally doing that, putting all their weight to go in the direction opposite to where it's in their best interest to go. A bit like anti-nuclear demonstrators in the 1980s who were trying to save the planet while screwing it harder by preventing the replacement of coal power plants with nuclear power plants.
The safest way to avoid making a false move next to not making a move is yet to move very carefully.
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Huh?? Why on Earth shouldn't clipping be a problem at 19 kHz?
Except that these have a use, and that their falsifiability isn't an issue.
I didn't realise that what I said sounded impressive to the point of prompting a trekkie (or whatever it is you're referring to) to deblaterate nonsensical gobbledegook to try to sound as "cool".
Ha... however considered that .flv video is H263 (or is it H264 now?) I guess you could find a program that would change the container to an AVI-compatible one and thus avoid recompressing?
All the things that you want to apply to the playback before the playback even starts, or even before the file is even fully downloaded.
But in the case of YouTube they do all their processing on the entire file once and for all, so the point is moot.
Maybe they should try with infrasounds then?
And how exactly would that help making smaller files?
It would be nice if YouTube offered some choices, such as volume adjustment
Yeah, I mean, who on YouTube would even think of abusing that?
It surprises me after all these years, audio formats don't provide recording information about the dynamics of the waveform.
Well what kind of things would you store that couldn't be obtained through analysis of the actual sound?
During that silent period, YouTube's encoder would be cranking up the gain so much that, when the first guitar pluck occured, it would still be a highly clipped thud.
Well actually it really depends. It depends whether it's audio compression, or volume normalisation. If it's audio compression then things get amplified regardless of chronology, and therefore if you remove the ambient noise it won't get amplified to an audible hiss and it won't have a negative effect on anything else.
However what you were thinking about is "volume normalisation". In that case a quick change if volume would have the effect you described. I'm not sure which it is in this case but from the summary it looks like it's audio compression.
By the way, noise gating? There are more sophisticated things these days for that, like stuff based on STFTs and noise profiling.
Did you try VLC's "volume normalizer"? It's not compression but it makes more quiet passages louder. And if your ambient noise problem is that bad, it may damage your hearing in the long term depending on how loud it really is.
Ruff ruff rufff, and ruff rufff, you little bigoted ruff ruff ruffff.
Translation : I'm ultrasound-deaf, you insensitive clod!
Any chance this would be due to a non-linearity like clipping? Someone correct me if I'm wrong but I think that with clipping with a strong 19 kHz component in a signal sampled at 44.1 kHz you'd get artifacts which base frequency would be 3,050 Hz.
Wouldn't another solution be to sneak past the entire recompression process by submitting a .flv video that meets YouTube's requirements to avoid recompression? Or would the compression on audio (not the same type of compression, the one this article is talking about) still be forced on these?
By the way to improve the trick, what you could do is detect the envelope of your sound, a modulate your 19 kHz sine with an envelope complementary so that the two envelopes would sum up to a flat line, so your 19 kHz envelope would be f(t) = 1 - original_sound_envelope(t).
[SETI] is trying to find significantly more advanced civilizations
Great, so what you're saying is SETI is just a bunch of elitist? That's grand, I just can't wait until they make the Earth move to a gated planet community.
Don't get me wrong, that would be great, with all these asteroids impacts we've had these last few eons in our neighbourhood..
Pffft, but obvious, the aliens will have thought of the same thing as us, that we should reserve the 1.420 GHz frequency for interplanetary communications and that we would be listening and that they would be the ones listening.
Now excuse me while I go back to listening to some radio frequency I think would be good for two persons to communicate on and wait for someone I never communicated with before to talk to me on this agreed frequency.
No it's a good analogy, although worded it a manner that may make its interpretation prone to confusion. "and trying to hear when anyone plays the note "A sharp."" should really be "and trying to hear nothing but "A sharp" notes".
It has nothing to do with identifying the pitch of a note as you seem to have misunderstood, it has to do with not being able to hear anything but one note in an entire piece.
Strange that they are only doing that now - haven't they seen Contact?
What the hell are you talking about? In Contact the SETI is basically just a bunch of hippies who time-share radiotelescopes and look for signals by listening into headphones. Here we're talking about listening to bands hundreds of megahertz wide. Very different.
If so we're out of luck. I mean how often do we even deliberately try to send beacons to eventual alien civilizations? We couldn't find ourselves in a giant space mirror the way we're doing it.
So whose side is the FCC on? they seem pretty two-faced to me.
Mmmmh... a contradictory double-sided bias.. what could it possibly mean... maybe... I don't know.. a lack of bias?
But how much is it in degrees Rankin? /sarcasm
By the way you cannot really understand what a temperature this close to 0 kelvins represents if you don't know what 0 K is, and when you do not only you know how much 0 K is but it also makes the conversion irrelevant because 10 mK = 0.01 K = 0.01 Celsius above 0 K = 0.018 F above 0 K
No encryption key cracking. Bigger than a PDP-7. Lame.
Why didn't they give the users multiple flavors of the most colorful operating systems they never tried (Vista, OSX, Kubuntu, etc) and ask them which one they liked best?
Why? Oh I don't know really.. Maybe because Microsoft doesn't want to publish something that says that users like Mac OS X best?
That "No Snitchin" movement is particularly stupid, because it's led by rappers and such who have no idea why one shouldn't snitch. Obviously it started as a way to "protect" local organised crime you're involved with and to rely on "street justice" rather than the traditional justice system, yet this silly movement made it into a golden rule that applies to absolutely everything without wondering why.
Because of such a silly rule, in cases when the witnesses have nothing to fear and that "street justice" will most likely not be given, people avoid witnessing for the sake of their own reputation. Just because they don't want to be "tagged snitch", the movement only amplifying what can make you be tagged a snitch to reach ridiculous proportions. And rappers only join the movement because it adds to their "street credentials", which most need more of, as in rap "street credibility" is something everybody claims to have more than they really do.
Which really all comes down to machoism/pissing contests from people who live in huge mansions in Connecticut and such. However it's not because something is dramatic that we cannot joke about it. I mean, we joke about all kinds of things that are actually atrocious.
You know what I like the most when people who try to save the world? When they ruin it.
My point being, the FSF is doing itself a big disservice while thinking they're fighting for their cause. All activists end up occasionally doing that, putting all their weight to go in the direction opposite to where it's in their best interest to go. A bit like anti-nuclear demonstrators in the 1980s who were trying to save the planet while screwing it harder by preventing the replacement of coal power plants with nuclear power plants.
The safest way to avoid making a false move next to not making a move is yet to move very carefully.